CN112350092B

CN112350092B - Connector and terminal

Info

Publication number: CN112350092B
Application number: CN201910730463.6A
Authority: CN
Inventors: 陈志东; 殷豪
Original assignee: Molex Interconnect Shanghai Co Ltd; Molex LLC
Current assignee: Molex Interconnect Shanghai Co Ltd; Molex LLC
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2023-07-18
Anticipated expiration: 2039-08-08
Also published as: US11394153B2; KR102471886B1; KR20210018152A; TWI715199B; US20210044055A1; TW202107781A; CN112350092A

Abstract

The application provides a connector and a terminal. The connector includes a terminal. The terminal comprises a plug-in connection part. The plug-in portion includes a front frame portion, a rear frame portion, a top plate portion, an arc discharge contact, and a main contact. The arcing contact includes a bottom plate portion and a top spring arm. The bottom plate portion is connected to the front frame portion and the rear frame portion and is separated from the top plate portion in the up-down direction. The top elastic arm extends from the rear frame part to the front frame part and is positioned below the top plate part. The arcing contact is located in front of the main contact. The main contact includes a first resilient arm and a second resilient arm. The first elastic arm extends from the rear frame portion toward the front frame portion and abuts between the bottom plate portion and the top elastic arm. The second elastic arm extends from the rear frame portion toward the front frame portion, and abuts between the top plate portion and the bottom plate portion, and is separated from the first elastic arm in the left-right direction.

Description

Connector and terminal

Technical Field

The present application relates to a connector and a terminal, and more particularly, to a power connector and a terminal thereof.

Background

Chinese patent No. 201180049216.1 discloses a female metal terminal fitting. The female metal terminal fitting includes a housing portion, a lance engaging portion, a spring support plate portion, a terminal biasing leaf spring and a wire connecting portion.

The housing portion is a portion into which a male metal terminal fitting is inserted, and is formed in an angular shell-like (angular case) shape including a bottom plate portion, two side wall portions rising from both side edges of the bottom plate portion, and a top plate portion connecting upper ends of the two side wall portions.

A contact portion for contacting a metal terminal fitting of a type is formed at the bottom plate portion so as to protrude from the bottom plate portion. The lance engagement portion has a curved portion protruding upward at a portion engaged with a lance in a connector housing, so that rigidity thereof is enhanced. The spring support plate portion is arranged to be laminated on an inner face of one of the upper plate portions.

The terminal biasing plate spring is formed to extend from the spring support plate portion to a front end side of the bottom plate portion. A front end of the terminal biasing plate spring is disposed at a position opposite to a contact portion of the bottom plate portion, and the male metal terminal fitting is brought into close contact with the contact portion. The wire connecting portion includes a sheath fixing piece holding a sheath portion of a sheath wire and a wire extrusion piece holding a conductive portion of the sheath wire.

However, the female metal terminal fitting does not have an arc discharge contact and a stable front frame engagement structure. Accordingly, when hot plugged, an electric spark is generated at the main contact point of the female metal terminal fitting. In addition, when the female metal terminal fitting is inserted obliquely by the male metal terminal fitting, the female metal terminal fitting is easily deformed.

The above description of "background art" merely provides background art, and it is not admitted that the above description of "background art" reveals the scope of the present application, does not constitute background art to the present application, and any description of "background art" above should not be taken as part of any of the present application.

Disclosure of Invention

Embodiments of the present application provide a connector. The connector includes an insulative housing and a terminal. The insulating housing defines a terminal receiving slot therein, and includes a retaining wall. The terminal is positioned in the terminal accommodating groove of the insulating shell and comprises a plug-in part, a wiring part and a connecting part. The plug-in part defines a plug-in space therein, and comprises a front frame part, a rear frame part, a top plate part, an arc discharge contact and a main contact. The rear frame portion is separated from the front frame portion in a front-rear direction. The top plate is connected with the front frame and the rear frame. The arcing contact includes a bottom plate portion and a top spring arm. The bottom plate portion connects the front frame portion and the rear frame portion and is separated from the top plate portion in one up-down direction. The top elastic arm extends from the rear frame portion to the front frame portion and is located below the top plate portion. The arcing contact is located in front of the main contact. The primary contact includes a first resilient arm and a second resilient arm. The first elastic arm extends from the rear frame portion toward the front frame portion and is adjacent between the bottom plate portion and the top elastic arm. The second elastic arm extends from the rear frame portion toward the front frame portion, and abuts between the top plate portion and the bottom plate portion, and is separated from the first elastic arm in one left-right direction. The connecting part connects the plug-in part and the wiring part. The connecting portion includes a stop portion configured to abut against the retaining wall of the insulating housing.

In some embodiments, the floor portion includes a floor contact portion. The top elastic arm comprises a top contact part, is opposite to the bottom plate contact part and is positioned in the plugging space. The first elastic arm comprises a first contact part which is positioned in the plugging space. The second elastic arm comprises a second contact part which is opposite to the first contact part and is positioned in the plugging space, wherein the top contact part and the bottom plate contact part are positioned in front of the first contact part and the second contact part.

In some embodiments, the front frame portion and the rear frame portion each include a first end portion and a second end portion opposite to each other, the first end portion being connected to the top plate portion, the second end portion being a free end portion, and the top plate portion being located above the front frame portion and the rear frame portion.

In some embodiments, the front frame portion includes a first end portion and a second end portion opposite to each other, the first end portion being connected to the top plate portion, the first end portion including a card hole, the second end portion including a tab configured to be inserted into the card hole.

In some embodiments, the rear frame portion includes a rear frame bottom, and wherein the connecting portion further includes a connecting bottom portion closer to a lower side than the rear frame bottom portion, and a step portion connecting the connecting bottom portion and the rear frame bottom portion.

In some embodiments, the bottom plate portion of the terminal has a gap between the bottom plate portion and the inner wall of the insulating housing in the up-down direction.

In some embodiments, the bottom plate contact portion is raised from the bottom plate portion toward the mating space.

In some embodiments, the rear end edge of the top plate portion protrudes upward by a flange portion, and the insulating housing further includes a locking shoulder portion that allows the flange portion to snap together and be resilient.

In some embodiments, the bottom plate contact portion, the top contact portion, the first contact portion, and the second contact portion are respectively disposed at a lower side, an upper side, a left side, and a right side of the plugging space.

In some embodiments, the top contact, the first contact, and the second contact are located at an end of the top spring arm, an end of the first spring arm, and an end of the second spring arm, respectively.

In some embodiments, the top contact, the first contact, and the second contact are all elliptical.

In some embodiments, the connector is a vehicle connector.

Another embodiment of the present application provides a terminal. The terminal comprises a plug-in connection part, a wiring part and a connecting part. The plug-in part defines a plug-in space therein, and comprises a front frame part, a rear frame part, a top plate part, an arc discharge contact and a main contact. The rear frame portion is separated from the front frame portion in a front-rear direction. The top plate is connected with the front frame and the rear frame. The arcing contact includes a bottom plate portion and a top spring arm. The bottom plate portion connects the front frame portion and the rear frame portion and is separated from the top plate portion in one up-down direction. The top elastic arm extends from the rear frame portion to the front frame portion and is located below the top plate portion. The arcing contact is located in front of the main contact. The primary contact includes a first resilient arm and a second resilient arm. The first elastic arm extends from the rear frame portion toward the front frame portion and is adjacent between the bottom plate portion and the top elastic arm. The second elastic arm extends from the rear frame portion toward the front frame portion, and abuts between the top plate portion and the bottom plate portion, and is separated from the first elastic arm in one left-right direction. The connecting part connects the plug-in part and the wiring part. The connecting portion includes a stop portion configured to abut against the retaining wall of the insulating housing.

In some embodiments, the rear end edge of the top plate portion protrudes upward by a burring.

In some embodiments, the terminal, wherein the top contact, the first contact, and the second contact are located at an end of the top spring arm, an end of the first spring arm, and an end of the second spring arm, respectively.

In the present application, the front frame portion of the terminal is relatively not easy to deform because of the arrangement of the lug and the clamping hole of the front frame portion of the terminal, so that the terminal can be prevented from being damaged by a male terminal when the terminal is obliquely inserted by the male terminal.

In addition, the terminal includes four contact points, wherein the first contact portion and the second contact portion on the left and right are primary contact points, and the top contact portion and the bottom contact portion on the upper and lower are secondary contact points. When the male terminal is electrically and thermally inserted, the top contact portion and the bottom contact portion above and below contact the male terminal before the first contact portion and the second contact portion to the left and right. Accordingly, the spark generated by the insertion is only left on the top contact portion and the bottom contact portion above and below, and the first contact portion and the second contact portion on the left and right are not affected. Therefore, the terminal has a hot plug function.

Furthermore, three contact points of the four contact points are respectively positioned at the tail end of the top elastic arm, the tail end of the first elastic arm and the tail end of the second elastic arm. Because the top elastic arm, the first elastic arm and the second elastic arm are of cantilever structures, the top elastic arm, the first elastic arm and the second elastic arm have good flexibility, and the top elastic arm, the first elastic arm and the second elastic arm can resist micro-corrosion of a terminal contact surface.

The foregoing has outlined rather broadly the features and advantages of the present application in order that the detailed description of the application that follows may be better understood. Other technical features and advantages that form the scope of the claims of the present application are described below. It should be appreciated by those skilled in the art that the conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures or methods of manufacture for carrying out the same purposes of the present application. It should also be realized by those skilled in the art that such equivalent constructions do not depart from the spirit and scope of the application as set forth in the appended claims.

Drawings

The disclosure will become more fully understood from the detailed description and the claims, when considered in conjunction with the accompanying drawings, wherein like reference numerals refer to like elements throughout.

Fig. 1 is a combined perspective view of a power connector.

Fig. 2 is an exploded perspective view of the power connector relative to fig. 1.

Fig. 3 is an exploded perspective view of the plug connector and the receptacle connector shown in fig. 2.

Fig. 4 is a perspective view of a female terminal of the plug connector of fig. 3.

Fig. 5 is a perspective view of another view angle with respect to the female terminal of fig. 4.

Fig. 6 is a perspective view of another view angle with respect to the female terminal of fig. 5.

Fig. 7 is a perspective schematic view of another view angle with respect to the female terminal of fig. 6.

Fig. 8 is a schematic side plan view of the female terminal relative to fig. 5.

Fig. 9 is an expanded perspective view of the female terminal with respect to fig. 4.

Fig. 10 is an expanded plan view schematic diagram with respect to the female terminal of fig. 9.

Fig. 11 is a cross-sectional plan view of the power connector of fig. 1 taken along a section line in the front-rear direction to show the bottom plate contact portion and the first contact portion of the female terminal of fig. 4.

Fig. 12 is a cross-sectional plan view of the power connector of fig. 1 taken along a section line in the front-rear direction to show a stop portion of the insulative housing.

Reference numerals illustrate:

1. power connector

2. Plug connector

20. Insulating shell

200. Terminal accommodating groove

201. Retaining wall

202. Locking shoulder

2000. Gap of

2001. Inner wall

21. Female terminal

210. Plug-in part

2100. Plug-in space

21000. Left side

21001. Right side

21002. Upper side of

21003. Underside of the lower part

2101. Front frame part

21010. First end portion

210100, clamping hole

21011. Second end portion

210110 and tab

2102. Rear frame part

21021. First end portion

21022. Second end portion

21020. Rear frame bottom

2103. Top plate part

21030. Flanging part

2104. Arc discharge contact

21040. Bottom plate part

210400, floor contact

21041. Top elastic arm

210410, top contact

2105. Main contact

21050. First elastic arm

210500, first contact portion

21051. Second elastic arm

210510, second contact portion

211. Wire connection part

2110. Wire clamping piece

2111. Sheath clamping piece

212. Connecting part

2120. Stop block

2121. Connection bottom

2122. Step part

3. Socket connector

30. Insulating shell

31. Male terminal

4. Locking structure

40. Elastic fastening part

41. Locking part

5. Conducting wire

50. Conductive body

51. Sheath

X1 right side

X2 left side

Y1 front

Y2 rear

Above Z1

Below Z2

Y1-Y2 front-rear direction

Up and down directions of Z1-Z2

Left-right direction of X2-X1

H height.

Detailed Description

The embodiments or examples of the disclosure shown in the drawings are described in a particular language. It will be appreciated that this is not intended to limit the scope of the present application. Any alterations and modifications in the described embodiments, and any further applications of the principles as described herein, would normally occur to one skilled in the art. Reference numerals may be repeated among the embodiments, but features in an embodiment are not necessarily used in another embodiment even though they have the same reference numerals.

The following detailed description describes various exemplary embodiments and is not intended to limit the application to the specifically disclosed combinations. Thus, unless otherwise indicated, features disclosed herein may be combined together to form a plurality of additional combinations that are not shown for purposes of brevity.

The female terminal of the present application helps control the discharge arc that occurs between the female terminal and the male terminal that it interfaces with when a power connector is hot plugged. Certain embodiments allow the female terminal to include one or more sacrificial electrical contacts (sacrificial electrical contacts) configured to first engage the mating male terminal to release any electrical arc before the mating male terminal engages the main electrical contact of the female terminal. Therefore, the female terminal of the present contact has (a function of) arc discharge protection for the main contact of the female terminal.

Fig. 1 is a combined perspective view of a power connector 1. Fig. 2 is an exploded perspective view of the power connector 1 with respect to fig. 1. Fig. 3 is an exploded perspective view of one plug connector 2 and one receptacle connector 3 shown in fig. 2. Referring to fig. 1 to 3, the power connector 1 includes a plug connector 2 to which a plurality of wires 5 are connected, a receptacle connector 3 to which the plug connector 2 is mated in one front-rear direction Y1-Y2, and a locking structure 4 to hold the plug connector 2 and the receptacle connector 3 to each other. The present embodiment shows only two wires 5 as an example. In this application, the plug connector 2 may also be referred to as a connector 2.

The plug connector 2 includes an insulating housing 20 and a plurality of female terminals 21 located in the insulating housing 20. The present embodiment shows only two female terminals 21 as an example. In this application, the female terminal 21 may be referred to as a terminal 21. Specifically, the insulative housing 20 defines a plurality of terminal-receiving slots 200 therein extending in the front-to-rear direction Y1-Y2. Each female terminal 21 is located in a corresponding terminal receiving groove 200. In some embodiments, each female terminal 21 is stamped and formed from sheet metal.

The receptacle connector 3 includes an insulating housing 30 and a plurality of male terminals 31 located in the insulating housing 30. The present embodiment shows only two male terminals 31 as an example. The locking structure 4 comprises an elastic snap-fit portion 40 and a locking portion 41. In the present embodiment, the elastic catching portions 40 are provided on the insulating housing 20 of the plug connector 2, and the locking portions 41 are provided on the insulating housing 30 of the receptacle connector 3. However, the lock structure 4 of the present application is not limited thereto. Any structure that can hold the plug connector 2 and the receptacle connector 3 to each other is possible.

Fig. 4 is a perspective view of the female terminal 21 of the plug connector 2 of fig. 3. Fig. 5 is a perspective view of another view angle with respect to the female terminal 21 of fig. 4. Fig. 6 is a perspective view of another view angle with respect to the female terminal 21 of fig. 5. Fig. 7 is a perspective view of another view angle with respect to the female terminal 21 of fig. 6. Fig. 8 is a schematic side plan view of the female terminal 21 with respect to fig. 5. Fig. 9 is an expanded perspective view of the female terminal 21 with respect to fig. 4. Fig. 10 is an expanded plan view of the female terminal 21 with respect to fig. 9.

Referring to fig. 4 to 10, the female terminal 21 includes one insertion portion 210, one connection portion 211, and one connection portion 212 connecting the insertion portion 210 and the connection portion 211. The structure before the assembly of the female terminal 21, the process of the assembly, and the structure after the assembly will be described below, respectively.

Referring to fig. 9 and 10, which show the structure before assembling the female terminal 21, the insertion portion 210 includes a front frame portion 2101, a rear frame portion 2102 separated from the front frame portion 2101 in the front-rear direction Y1-Y2, a top plate portion 2103 connecting the front frame portion 2101 and the rear frame portion 2102, an arc discharge contactor 2104, and a main contactor 2105.

The arcing contact 2104 includes a bottom plate portion 21040 (see fig. 8) connecting the front frame portion 2101 and the rear frame portion 2102, and a top elastic arm 21041 (see fig. 8) extending from the rear frame portion 2102 toward the front frame portion 2101. The main contact 2105 is replaced with an arcing contact 2104 to withstand an arcing occurring on the female terminal 21, which will be described in detail below. Further, the bottom plate portion 21040 includes a bottom plate contact portion 210400. Similarly, the top resilient arm 21041 includes a top contact 210410.

The main contact 2105 includes a first elastic arm 21050 (see fig. 10) extending from the rear frame portion 2102 toward the front frame portion 2101 and abutting between the bottom plate portion 21040 and the top elastic arm 21041, and a second elastic arm 21051 (see fig. 4) extending from the rear frame portion 2102 toward the front frame portion 2101 and abutting between the top plate portion 2103 and the bottom plate portion 21040 (see fig. 10) and separated from the first elastic arm 21050 in the left-right direction X2-X1. Further, the first resilient arm 21050 includes a first contact portion 210500. Similarly, the second resilient arm 21051 includes a second contact portion 210510.

Since the top elastic arm 21041, the first elastic arm 21050 and the second elastic arm 21051 have a cantilever structure, the top elastic arm 21041, the first elastic arm 21050 and the second elastic arm 21051 have good flexibility, and the top elastic arm 21041, the first elastic arm 21050 and the second elastic arm 21051 can resist fretting corrosion of the contact surface of the terminal.

The front frame portion 2101 includes opposed first and second ends 21010, 21011. The first end 21010 is connected to the top plate 2103, and the second end 21011 is one free end. The first end 21010 includes a card aperture 210100 and the second end 21011 includes a tab 210110.

The back frame portion 2102 includes a first end 21021 and a second end 21022 opposite one another. The first end 21021 is connected to the top plate 2103. The second end 21022 is a free end.

During assembly into a three-dimensional female terminal 21, the tab 210110 is inserted into the card aperture 210100. Accordingly, the front frame portion 2101 of the female terminal 21 is relatively less likely to deform, and further, damage to the male terminal 31 when the female terminal 21 is obliquely inserted by the male terminal 31 can be avoided.

Referring to fig. 4 to 8, which show the assembled structure of the female terminal 21, in the present embodiment, the front frame portion 2101 is a rectangular frame. However, the present application is not limited thereto. In other embodiments, the front frame portion 2101 may be a frame of other shapes. Further, in the present embodiment, the rear frame portion 2102 is a rectangular frame. However, the present application is not limited thereto. In other embodiments, the rear frame portion 2102 may be a frame of other shapes.

The plugging portion 210 defines a plugging space 2100 therein for inserting the male terminal 31. The top plate 2103 is located above the front frame 2101 and the rear frame 2102 when viewed from the direction from the insertion portion 210 to the connection portion 211.

Further, the top elastic arm 21041 is located below the top plate portion 2103. Accordingly, when the male terminal 31 is inserted into the insertion space 2100, the top elastic arm 21041 is elastically deformed by the pressing of the male terminal 31, moves upward Z1, and contacts the top plate 2103, and further, the top elastic arm 21041 has a simple structure. Accordingly, the forward force applied to the top contact portion 210410 of the top resilient arm 21041 increases, thereby enabling a lower and more stable contact resistance to be provided. The top plate 2103 is separated from the bottom plate 21040 in the vertical direction Z1 to Z2.

In addition, the mating space 2100 includes a left side 21000 and a right side 21001 (see fig. 4) separated in a left-right direction X2-X1, and an upper side 21002 and a lower side 21003 separated in an up-down direction Z1-Z2.

The bottom plate contact portion 210400 of the bottom plate portion 21040 is located in the mating space 2100 and is disposed on the underside 21003 (see fig. 7 and 9) of the mating space 2100 with the bottom plate contact portion 210400 serving as a secondary contact point for the female terminal 21. Specifically, the bottom plate contact portion 210400 is formed by the bottom plate portion 21040 protruding toward the insertion space 2100. The bottom plate contact portion 210400 is an elliptical surface. The insertion angle of the elliptical surface is smaller when the male terminal 31 is inserted into the female terminal 21. Thus, lower insertion forces can be maintained without sacrificing forward force and Hertz stress. However, the present application is not limited thereto. In some embodiments, the floor contact 210400 can be of any other geometry.

The top contact portion 210410 of the top resilient arm 21041 is opposite the bottom plate contact portion 210400 and is located within the mating space 2100 with the top contact portion 210410 being the secondary contact point of the female terminal 21. Specifically, the top contact portion 210410 is located at the end of the top resilient arm 21041 and is disposed on the upper side 21002 of the mating space 2100 (see fig. 8). In some embodiments, the top contact 210410 is aligned with the floor contact 210400 of the floor portion 21040 in the front-to-back direction Y1-Y2 and the left-to-right direction X2-X1 (see fig. 8). The top contact 210410 is oval. The insertion angle of the elliptical surface is smaller when the male terminal 31 is inserted into the female terminal 21. Thus, lower insertion forces can be maintained without sacrificing forward force and Hertz stress. However, the present application is not limited thereto. In some embodiments, the top contact 210410 can be of any other geometry.

The first contact portion 210500 of the first resilient arm 21050 is located within the mating space 2100, with the first contact portion 210500 serving as the primary contact point of the female terminal 21. Specifically, the first contact portion 210500 is located at the end of the first resilient arm 21050 and is disposed on the left side 21000 of the mating space 2100. Further, the first contact portion 210500 is an elliptical surface. The insertion angle of the elliptical surface is smaller when the male terminal 31 is inserted into the female terminal 21. Thus, lower insertion forces can be maintained without sacrificing forward force and Hertz stress. However, the present application is not limited thereto. In some embodiments, the first contact 210500 can be of any other geometry. Further, the top contact portion 210410 and the bottom plate contact portion 210400 are located in front of the first contact portion 210500 in the front-rear direction Y1-Y2 (see fig. 8).

The second contact portion 210510 of the second resilient arm 21051 is opposite the first contact portion 210500 and is located within the mating space 2100 with the second contact portion 210510 serving as the primary contact point of the female terminal 21. Specifically, the second contact portion 210510 is located at the end of the second elastic arm 21051 and is disposed on the right side 21001 of the mating space 2100. In some embodiments, the second contact 210510 is aligned with the first contact 210500 of the first resilient arm 21050 in the front-to-back direction Y1-Y2 and the up-to-down direction Z1-Z2. The second contact portion 210510 is an elliptical surface. The insertion angle of the elliptical surface is smaller when the male terminal 31 is inserted into the female terminal 21. Thus, lower insertion forces can be maintained without sacrificing forward force and Hertz stress. However, the present application is not limited thereto. In some embodiments, the second contact 210510 can be of any other geometry. The top contact portion 210410 and the bottom plate contact portion 210400 are located in front of the second contact portion 210510 in the front-rear direction Y1-Y2.

When the male terminal 31 is electrically and thermally inserted, the top contact portion 210410 and the bottom plate contact portion 210400 located at the upper side 21002 and the lower side 21003 of the mating space 2100 contact the male terminal 31 in preference to the first contact portion 210500 and the second contact portion 210510 located at the left side 21000 and the right side 21001 of the mating space 2100. That is, the male terminal 31 is contacted with the arcing contact 2104 before being contacted with the main contact 2105, whereby any arcing between the male terminal 31 and the female terminal 21 occurs at the arcing contact 2104. Accordingly, the spark generated by the insertion is left only on the top contact portion 210410 and the bottom contact portion 210400, which are secondary contact points, and the first contact portion 210500 and the second contact portion 210510, which are primary contact points, are not affected. Therefore, the female terminal 21 has a hot plug function.

Further, referring back to fig. 3 and 5, the wire connection portion 211 includes a wire clip 2110 for clamping a conductive body 50 of the wire 5, and a sheath clip 2111 for clamping a sheath 51 of the wire 5.

The schematic sectional plan view of fig. 11 is a sectional line of the power connector 1 of fig. 1 along the front-rear direction Y1-Y2 to show the bottom plate contact portion 210400 and the top contact portion 210410 of the female terminal 21 of fig. 4. Referring to fig. 11, fig. 11 shows two female terminals 21, and the following description will be mainly made of the female terminal 21 near the upper side Z1. The top contact portion 210410 and the bottom plate contact portion 210400, which are located inside the mating space 2100, are in contact with the male terminal 31.

The back frame portion 2102 includes a back frame bottom 21020. The connection portion 212 further includes a connection bottom 2121 that is closer to the lower side Z2 than the rear frame bottom 21020, and a step 2122 that connects the connection bottom 2121 and the rear frame bottom 21020. Accordingly, the bottom plate portion 21040 of the female terminal 21 is separated from one inner wall 2001 of the terminal receiving groove 200 of the insulating housing 20 in the up-down direction Z1-Z2, so that one gap 2000 is provided between the bottom plate portion 21040 of the female terminal 21 and the inner wall 2001 of the terminal receiving groove 200. The gap 2000 provides floatability to the female terminal 21.

Referring to fig. 4 and 11, the rear end edge of the top plate 2103 of the female terminal 21 protrudes upward by one burring 21030. Insulating housing 20 further includes a locking shoulder 202 that allows the flange 21030 to snap together and be resilient. Specifically, the burring 21030 is snapped onto the side of the locking shoulder 202 facing the front Y1 to prevent the female terminal 21 from backing out of the insulative housing 20 after the female terminal 21 is inserted into the insulative housing 20. In addition, the burring 21030 can provide a better feel and a warning sound during the assembly of the female terminal 21 into the insulating housing 20.

Fig. 12 is a schematic sectional plan view of the power connector 1 of fig. 1 taken along a section line of the front-rear direction Y1-Y2 to show the stopper 2120 of the insulating housing 20. Referring to fig. 12, the connection portion 212 of the female terminal 21 further includes a plurality of stoppers 2120 configured to abut one retaining wall 201 of the insulating housing 20. The present embodiment includes two stops 2120. Specifically, each stopper 2120 provides a guiding function and an erroneous insertion preventing function when the female terminal 21 is assembled into the corresponding terminal receiving groove 200. Further, the head portion of each stopper 2120 is rounded so that assembling the female terminal 21 is relatively smooth.

In the description of the present application, the left-right direction X2-X1, the front-rear direction Y1-Y2, the up-down direction Z1-Z2, the upper direction Z1, the lower direction Z2, the front direction Y1, the rear direction Y2, the left direction X2, and the right direction X1 are used for explaining the relative positional relationship and the operational relationship of the respective components in fig. 1 to 12. That is, these directions are not absolute directions, but relative directions. Thus, these directions are not limited to the orientations in which the components of FIGS. 1-12 are used. The directions described herein should be interpreted as varying with the orientation of the components in fig. 1-12.

Although the present application and its advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application as defined by the appended claims. For example, many of the manufacturing methods described above may be implemented in different ways, and replaced with other manufacturing methods or combinations thereof. Furthermore, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. Those of skill in the art will appreciate from the disclosure of the present application that a process, machine, manufacture, composition of matter, means, methods, or steps, presently existing or later to be developed that perform the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present application. Accordingly, such methods, machines, manufacture, compositions of matter, means, methods, or steps, are encompassed by the claims of the present application.

Claims

1. A connector, comprising:

an insulating housing defining a terminal receiving recess therein, the insulating housing including a retaining wall; and

a terminal located in the terminal receiving groove of the insulating housing, the terminal comprising:

a grafting portion, a grafting space is delimited in it, this grafting portion includes:

a front frame portion;

a rear frame portion which is separated from the front frame portion in a front-rear direction;

a top plate portion connecting the front frame portion and the rear frame portion;

an arcing contact comprising:

a bottom plate portion connecting the front frame portion and the rear frame portion and separated from the top plate portion in an up-down direction; and

a top elastic arm extending from the rear frame portion to the front frame portion and located below the top plate portion;

a primary contact, wherein the arcing contact is located in front of the primary contact, the primary contact comprising:

a first elastic arm extending from the rear frame portion toward the front frame portion and abutting between the bottom plate portion and the top elastic arm; and

a second elastic arm extending from the rear frame portion toward the front frame portion, abutting between the top plate portion and the bottom plate portion, and separated from the first elastic arm in a left-right direction;

a wiring portion; and

the connecting part is used for connecting the plug-in connection part and the wiring part and comprises a stop part and a retaining wall which is configured to be abutted against the insulating shell, wherein the front frame part comprises a first end part and a second end part which are opposite, the rear frame part comprises a third end part and a fourth end part which are opposite, the first end part and the third end part are connected with the top plate part, and the second end part and the fourth end part are free end parts.

2. The connector of claim 1, wherein:

the bottom plate portion includes:

a floor contact;

the top spring arm includes:

a top contact portion opposite to the bottom plate contact portion and located in the plugging space;

the first elastic arm includes:

a first contact part located in the plugging space;

the second elastic arm includes:

a second contact part opposite to the first contact part and located in the plugging space,

wherein the top contact portion and the bottom contact portion are located in front of the first contact portion and the second contact portion.

3. The connector of claim 1, wherein the front frame portion and the rear frame portion each include a first end portion and a second end portion opposite to each other, the first end portion being connected to the top plate portion, the second end portion being a free end portion, the top plate portion being located above the front frame portion and the rear frame portion.

4. The connector of claim 1, wherein the front frame portion includes a first end and a second end opposite to each other, the first end being connected to the top plate portion, the first end including a card hole, the second end including a tab configured to be inserted into the card hole.

5. The connector of claim 1, wherein the back frame portion includes a back frame bottom, and wherein the connecting portion further includes a connecting bottom that is closer to below than the back frame bottom, and a step connecting the connecting bottom and the back frame bottom.

6. The connector according to claim 3, wherein the bottom plate portion of the terminal has a gap between the upper and lower direction and the inner wall of the insulating housing.

7. The connector of claim 2, wherein the bottom plate contact portion is formed by the bottom plate portion bulging toward the insertion space.

8. The connector of claim 1, wherein the rear end edge of the top plate portion protrudes upward by a burring portion, and wherein the insulating housing further includes a locking shoulder that allows the burring portion to snap together and be resilient.

9. The connector of claim 2, wherein the bottom plate contact portion, the top contact portion, the first contact portion, and the second contact portion are disposed at a lower side, an upper side, a left side, and a right side of the mating space, respectively.

10. The connector of claim 9, wherein the top contact, the first contact, and the second contact are located at an end of the top spring arm, an end of the first spring arm, and an end of the second spring arm, respectively.

11. The connector of claim 2, wherein the top contact, the first contact, and the second contact are all ellipsoids.

12. The connector according to claim 1, wherein the connector is a vehicular connector.

13. A terminal, comprising:

a front frame portion;

an arcing contact comprising:

a wiring portion; and

the connecting part is used for connecting the plugging part and the wiring part, wherein the front frame part comprises a first end part and a second end part which are opposite, the rear frame part comprises a third end part and a fourth end part which are opposite, the first end part and the third end part are connected with the top plate part, and the second end part and the fourth end part are free end parts.

14. The terminal of claim 13, wherein:

the bottom plate portion includes:

a floor contact;

the top spring arm includes:

the first elastic arm includes:

a first contact part located in the plugging space;

the second elastic arm includes:

and the second contact part is opposite to the first contact part and is positioned in the plugging space, wherein the top contact part and the bottom plate contact part are positioned in front of the first contact part and the second contact part.

15. The terminal of claim 13, wherein the front frame portion and the rear frame portion each include opposing first and second ends, the first end being connected to the top plate portion, the second end being a free end, the top plate portion being located above the front frame portion and the rear frame portion.

16. The terminal of claim 13, wherein the front frame portion includes opposing first and second ends, the first end being connected to the top plate portion, the first end including a clamping hole, the second end including a tab configured to be inserted into the clamping hole.

17. The terminal of claim 13, wherein the back frame portion includes a back frame bottom, and wherein the connecting portion further includes a connecting bottom that is closer to below than the back frame bottom, and a step connecting the connecting bottom and the back frame bottom.

18. The terminal of claim 14, wherein the bottom plate contact portion is raised from the bottom plate portion toward the mating space.

19. The terminal of claim 13, wherein the rear end edge of the top plate portion projects upwardly from a burring.

20. The terminal of claim 14, wherein the bottom plate contact portion, the top contact portion, the first contact portion, and the second contact portion are disposed at a lower side, an upper side, a left side, and a right side of the mating space, respectively.

21. The terminal of claim 20, wherein the top contact, the first contact, and the second contact are located at an end of the top spring arm, an end of the first spring arm, and an end of the second spring arm, respectively.

22. The terminal of claim 14, wherein the top contact, the first contact, and the second contact are all elliptical.